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#!/system/bin/sh

#######################################################################################

# Magisk Boot Image Patcher

#######################################################################################

# Usage: boot_patch.sh <bootimage>

# The following environment variables can configure the installation:

# KEEPVERITY, KEEPFORCEENCRYPT, PATCHVBMETAFLAG, RECOVERYMODE, LEGACYSAR

# This script should be placed in a directory with the following files:

# File name Type Description

# boot_patch.sh script A script to patch boot image for Magisk.

# (this file) The script will use files in its same

# directory to complete the patching process.

# util_functions.sh script A script which hosts all functions required

# for this script to work properly.

# magiskinit binary The binary to replace /init.

# magisk(32/64) binary The magisk binaries.

# magiskboot binary A tool to manipulate boot images.

# stub.apk binary The stub Magisk app to embed into ramdisk.

# chromeos folder This folder includes the utility and keys to sign

# (optional) chromeos boot images. Only used for Pixel C.

#######################################################################################

############

# Functions

############

# Pure bash dirname implementation

getdir() {

case "$1" in

*/*)

dir=${1%/*}

if [ -z $dir ]; then

echo "/"

else

echo $dir

;;

*) echo "." ;;

esac

}

#################

# Initialization

#################

if [ -z $SOURCEDMODE ]; then

# Switch to the location of the script file

cd "$(getdir "${BASH_SOURCE:-$0}")"

# Load utility functions

. ./util_functions.sh

# Check if 64-bit

api_level_arch_detect

BOOTIMAGE="$1"

[ -e "$BOOTIMAGE" ] || abort "$BOOTIMAGE does not exist!"

# Dump image for MTD/NAND character device boot partitions

if [ -c "$BOOTIMAGE" ]; then

nanddump -f boot.img "$BOOTIMAGE"

BOOTNAND="$BOOTIMAGE"

BOOTIMAGE=boot.img

# Flags

[ -z $KEEPVERITY ] && KEEPVERITY=false

[ -z $KEEPFORCEENCRYPT ] && KEEPFORCEENCRYPT=false

[ -z $PATCHVBMETAFLAG ] && PATCHVBMETAFLAG=false

[ -z $RECOVERYMODE ] && RECOVERYMODE=false

[ -z $LEGACYSAR ] && LEGACYSAR=false

export KEEPVERITY

export KEEPFORCEENCRYPT

export PATCHVBMETAFLAG

chmod -R 755 .

#########

# Unpack

#########

CHROMEOS=false

ui_print "- Unpacking boot image"

./magiskboot unpack "$BOOTIMAGE"

case $? in

0 ) ;;

1 )

abort "! Unsupported/Unknown image format"

;;

2 )

ui_print "- ChromeOS boot image detected"

CHROMEOS=true

;;

* )

abort "! Unable to unpack boot image"

;;

esac

###################

# Ramdisk Restores

###################

# Test patch status and do restore

ui_print "- Checking ramdisk status"

if [ -e ramdisk.cpio ]; then

./magiskboot cpio ramdisk.cpio test

STATUS=$?

SKIP_BACKUP=""

else

# Stock A only legacy SAR, or some Android 13 GKIs

STATUS=0

SKIP_BACKUP="#"

case $((STATUS & 3)) in

0 ) # Stock boot

ui_print "- Stock boot image detected"

SHA1=$(./magiskboot sha1 "$BOOTIMAGE" 2>/dev/null)

abort "! Please install Magisk first"

cat $BOOTIMAGE > stock_boot.img

cp -af ramdisk.cpio ramdisk.cpio.orig 2>/dev/null

;;

1 ) # Magisk patched

ui_print "- Magisk patched boot image detected"

./magiskboot cpio ramdisk.cpio \

# ./magiskboot cpio ramdisk.cpio \

"extract .backup/.magisk config.orig" \

# "extract .backup/.magisk config.orig" \

"restore"

# "restore"

cp -af ramdisk.cpio ramdisk.cpio.orig

# cp -af ramdisk.cpio ramdisk.cpio.orig

rm -f stock_boot.img

# rm -f stock_boot.img

;;

2 ) # Unsupported

ui_print "! Boot image patched by unsupported programs"

abort "! Please restore back to stock boot image"

;;

esac

# Workaround custom legacy Sony /init -> /(s)bin/init_sony : /init.real setup

INIT=init

if [ $((STATUS & 4)) -ne 0 ]; then

INIT=init.real

if [ -f config.orig ]; then

# Read existing configs

chmod 0644 config.orig

SHA1=$(grep_prop SHA1 config.orig)

if ! $BOOTMODE; then

# Do not inherit config if not in recovery

PREINITDEVICE=$(grep_prop PREINITDEVICE config.orig)

rm config.orig

##################

# Ramdisk Patches

##################

ui_print "- Patching ramdisk"

# Compress to save precious ramdisk space

SKIP32="#"

SKIP64="#"

if [ -f magisk64 ]; then

$BOOTMODE && [ -z "$PREINITDEVICE" ] && PREINITDEVICE=$(./magisk64 --preinit-device)

./magiskboot compress=xz magisk64 magisk64.xz

unset SKIP64

if [ -f magisk32 ]; then

$BOOTMODE && [ -z "$PREINITDEVICE" ] && PREINITDEVICE=$(./magisk32 --preinit-device)

./magiskboot compress=xz magisk32 magisk32.xz

unset SKIP32

./magiskboot compress=xz stub.apk stub.xz

echo "KEEPVERITY=$KEEPVERITY" > config

echo "KEEPFORCEENCRYPT=$KEEPFORCEENCRYPT" >> config

echo "RECOVERYMODE=$RECOVERYMODE" >> config

if [ -n "$PREINITDEVICE" ]; then

ui_print "- Pre-init storage partition: $PREINITDEVICE"

echo "PREINITDEVICE=$PREINITDEVICE" >> config

[ -n "$SHA1" ] && echo "SHA1=$SHA1" >> config

./magiskboot cpio ramdisk.cpio \

"add 0750 $INIT magiskinit" \

"mkdir 0750 overlay.d" \

"mkdir 0750 overlay.d/sbin" \

"$SKIP32 add 0644 overlay.d/sbin/magisk32.xz magisk32.xz" \

"add 0750 overlay.d/init.autoboot.rc files/init.autoboot.rc" \

"$SKIP64 add 0644 overlay.d/sbin/magisk64.xz magisk64.xz" \

"add 0750 overlay.d/sbin/autoboot.sh files/autoboot.sh" \

"add 0644 overlay.d/sbin/stub.xz stub.xz" \

"patch" \

"$SKIP_BACKUP backup ramdisk.cpio.orig" \

"#$SKIP_BACKUP backup ramdisk.cpio.orig" \

"mkdir 000 .backup" \

"#mkdir 000 .backup" \

"add 000 .backup/.magisk config" \

"#add 000 .backup/.magisk config" \

|| abort "! Unable to patch ramdisk"

rm -f ramdisk.cpio.orig config magisk*.xz stub.xz

#################

# Binary Patches

#################

for dt in dtb kernel_dtb extra; do

if [ -f $dt ]; then

if ! ./magiskboot dtb $dt test; then

ui_print "! Boot image $dt was patched by old (unsupported) Magisk"

abort "! Please try again with *unpatched* boot image"

if ./magiskboot dtb $dt patch; then

ui_print "- Patch fstab in boot image $dt"

done

if [ -f kernel ]; then

PATCHEDKERNEL=false

# Remove Samsung RKP

./magiskboot hexpatch kernel \

49010054011440B93FA00F71E9000054010840B93FA00F7189000054001840B91FA00F7188010054 \

A1020054011440B93FA00F7140020054010840B93FA00F71E0010054001840B91FA00F7181010054 \

&& PATCHEDKERNEL=true

# Remove Samsung defex

# Before: [mov w2, #-221] (-__NR_execve)

# After: [mov w2, #-32768]

./magiskboot hexpatch kernel 821B8012 E2FF8F12 && PATCHEDKERNEL=true

# Force kernel to load rootfs for legacy SAR devices

# skip_initramfs -> want_initramfs

$LEGACYSAR && ./magiskboot hexpatch kernel \

736B69705F696E697472616D667300 \

77616E745F696E697472616D667300 \

&& PATCHEDKERNEL=true

# If the kernel doesn't need to be patched at all,

# keep raw kernel to avoid bootloops on some weird devices

$PATCHEDKERNEL || rm -f kernel

#################

# Repack & Flash

#################

ui_print "- Repacking boot image"

./magiskboot repack "$BOOTIMAGE" || abort "! Unable to repack boot image"

# Sign chromeos boot

$CHROMEOS && sign_chromeos

# Restore the original boot partition path

[ -e "$BOOTNAND" ] && BOOTIMAGE="$BOOTNAND"

# Reset any error code

true

Diferencias guardadas

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#!/system/bin/sh
#######################################################################################
# Magisk Boot Image Patcher
#######################################################################################
#
# Usage: boot_patch.sh <bootimage>
#
# The following environment variables can configure the installation:
# KEEPVERITY, KEEPFORCEENCRYPT, PATCHVBMETAFLAG, RECOVERYMODE, LEGACYSAR
#
# This script should be placed in a directory with the following files:
#
# File name          Type      Description
#
# boot_patch.sh      script    A script to patch boot image for Magisk.
#                  (this file) The script will use files in its same
#                              directory to complete the patching process.
# util_functions.sh  script    A script which hosts all functions required
#                              for this script to work properly.
# magiskinit         binary    The binary to replace /init.
# magisk(32/64)      binary    The magisk binaries.
# magiskboot         binary    A tool to manipulate boot images.
# stub.apk           binary    The stub Magisk app to embed into ramdisk.
# chromeos           folder    This folder includes the utility and keys to sign
#                  (optional)  chromeos boot images. Only used for Pixel C.
#
#######################################################################################

############
# Functions
############

# Pure bash dirname implementation
getdir() {
  case "$1" in
    */*)
      dir=${1%/*}
      if [ -z $dir ]; then
        echo "/"
      else
        echo $dir
      fi
    ;;
    *) echo "." ;;
  esac
}

#################
# Initialization
#################

if [ -z $SOURCEDMODE ]; then
  # Switch to the location of the script file
  cd "$(getdir "${BASH_SOURCE:-$0}")"
  # Load utility functions
  . ./util_functions.sh
  # Check if 64-bit
  api_level_arch_detect
fi

BOOTIMAGE="$1"
[ -e "$BOOTIMAGE" ] || abort "$BOOTIMAGE does not exist!"

# Dump image for MTD/NAND character device boot partitions
if [ -c "$BOOTIMAGE" ]; then
  nanddump -f boot.img "$BOOTIMAGE"
  BOOTNAND="$BOOTIMAGE"
  BOOTIMAGE=boot.img
fi

# Flags
[ -z $KEEPVERITY ] && KEEPVERITY=false
[ -z $KEEPFORCEENCRYPT ] && KEEPFORCEENCRYPT=false
[ -z $PATCHVBMETAFLAG ] && PATCHVBMETAFLAG=false
[ -z $RECOVERYMODE ] && RECOVERYMODE=false
[ -z $LEGACYSAR ] && LEGACYSAR=false
export KEEPVERITY
export KEEPFORCEENCRYPT
export PATCHVBMETAFLAG

chmod -R 755 .

#########
# Unpack
#########

CHROMEOS=false

ui_print "- Unpacking boot image"
./magiskboot unpack "$BOOTIMAGE"

case $? in
  0 ) ;;
  1 )
    abort "! Unsupported/Unknown image format"
    ;;
  2 )
    ui_print "- ChromeOS boot image detected"
    CHROMEOS=true
    ;;
  * )
    abort "! Unable to unpack boot image"
    ;;
esac

###################
# Ramdisk Restores
###################

# Test patch status and do restore
ui_print "- Checking ramdisk status"
if [ -e ramdisk.cpio ]; then
  ./magiskboot cpio ramdisk.cpio test
  STATUS=$?
  SKIP_BACKUP=""
else
  # Stock A only legacy SAR, or some Android 13 GKIs
  STATUS=0
  SKIP_BACKUP="#"
fi
case $((STATUS & 3)) in
  0 )  # Stock boot
    ui_print "- Stock boot image detected"
    SHA1=$(./magiskboot sha1 "$BOOTIMAGE" 2>/dev/null)
    cat $BOOTIMAGE > stock_boot.img
    cp -af ramdisk.cpio ramdisk.cpio.orig 2>/dev/null
    ;;
  1 )  # Magisk patched
    ui_print "- Magisk patched boot image detected"
    ./magiskboot cpio ramdisk.cpio \
    "extract .backup/.magisk config.orig" \
    "restore"
    cp -af ramdisk.cpio ramdisk.cpio.orig
    rm -f stock_boot.img
    ;;
  2 )  # Unsupported
    ui_print "! Boot image patched by unsupported programs"
    abort "! Please restore back to stock boot image"
    ;;
esac

# Workaround custom legacy Sony /init -> /(s)bin/init_sony : /init.real setup
INIT=init
if [ $((STATUS & 4)) -ne 0 ]; then
  INIT=init.real
fi

if [ -f config.orig ]; then
  # Read existing configs
  chmod 0644 config.orig
  SHA1=$(grep_prop SHA1 config.orig)
  if ! $BOOTMODE; then
    # Do not inherit config if not in recovery
    PREINITDEVICE=$(grep_prop PREINITDEVICE config.orig)
  fi
  rm config.orig
fi

##################
# Ramdisk Patches
##################

ui_print "- Patching ramdisk"

# Compress to save precious ramdisk space
SKIP32="#"
SKIP64="#"
if [ -f magisk64 ]; then
  $BOOTMODE && [ -z "$PREINITDEVICE" ] && PREINITDEVICE=$(./magisk64 --preinit-device)
  ./magiskboot compress=xz magisk64 magisk64.xz
  unset SKIP64
fi
if [ -f magisk32 ]; then
  $BOOTMODE && [ -z "$PREINITDEVICE" ] && PREINITDEVICE=$(./magisk32 --preinit-device)
  ./magiskboot compress=xz magisk32 magisk32.xz
  unset SKIP32
fi
./magiskboot compress=xz stub.apk stub.xz

echo "KEEPVERITY=$KEEPVERITY" > config
echo "KEEPFORCEENCRYPT=$KEEPFORCEENCRYPT" >> config
echo "RECOVERYMODE=$RECOVERYMODE" >> config
if [ -n "$PREINITDEVICE" ]; then
  ui_print "- Pre-init storage partition: $PREINITDEVICE"
  echo "PREINITDEVICE=$PREINITDEVICE" >> config
fi
[ -n "$SHA1" ] && echo "SHA1=$SHA1" >> config

./magiskboot cpio ramdisk.cpio \
"add 0750 $INIT magiskinit" \
"mkdir 0750 overlay.d" \
"mkdir 0750 overlay.d/sbin" \
"$SKIP32 add 0644 overlay.d/sbin/magisk32.xz magisk32.xz" \
"$SKIP64 add 0644 overlay.d/sbin/magisk64.xz magisk64.xz" \
"add 0644 overlay.d/sbin/stub.xz stub.xz" \
"patch" \
"$SKIP_BACKUP backup ramdisk.cpio.orig" \
"mkdir 000 .backup" \
"add 000 .backup/.magisk config" \
|| abort "! Unable to patch ramdisk"

rm -f ramdisk.cpio.orig config magisk*.xz stub.xz

#################
# Binary Patches
#################

for dt in dtb kernel_dtb extra; do
  if [ -f $dt ]; then
    if ! ./magiskboot dtb $dt test; then
      ui_print "! Boot image $dt was patched by old (unsupported) Magisk"
      abort "! Please try again with *unpatched* boot image"
    fi
    if ./magiskboot dtb $dt patch; then
      ui_print "- Patch fstab in boot image $dt"
    fi
  fi
done

if [ -f kernel ]; then
  PATCHEDKERNEL=false
  # Remove Samsung RKP
  ./magiskboot hexpatch kernel \
  49010054011440B93FA00F71E9000054010840B93FA00F7189000054001840B91FA00F7188010054 \
  A1020054011440B93FA00F7140020054010840B93FA00F71E0010054001840B91FA00F7181010054 \
  && PATCHEDKERNEL=true

# Remove Samsung defex
  # Before: [mov w2, #-221]   (-__NR_execve)
  # After:  [mov w2, #-32768]
  ./magiskboot hexpatch kernel 821B8012 E2FF8F12 && PATCHEDKERNEL=true

# Force kernel to load rootfs for legacy SAR devices
  # skip_initramfs -> want_initramfs
  $LEGACYSAR && ./magiskboot hexpatch kernel \
  736B69705F696E697472616D667300 \
  77616E745F696E697472616D667300 \
  && PATCHEDKERNEL=true

# If the kernel doesn't need to be patched at all,
  # keep raw kernel to avoid bootloops on some weird devices
  $PATCHEDKERNEL || rm -f kernel
fi

#################
# Repack & Flash
#################

ui_print "- Repacking boot image"
./magiskboot repack "$BOOTIMAGE" || abort "! Unable to repack boot image"

# Sign chromeos boot
$CHROMEOS && sign_chromeos

# Restore the original boot partition path
[ -e "$BOOTNAND" ] && BOOTIMAGE="$BOOTNAND"

# Reset any error code
true

Texto modificado

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#!/system/bin/sh
#######################################################################################
# Magisk Boot Image Patcher
#######################################################################################
#
# Usage: boot_patch.sh <bootimage>
#
# The following environment variables can configure the installation:
# KEEPVERITY, KEEPFORCEENCRYPT, PATCHVBMETAFLAG, RECOVERYMODE, LEGACYSAR
#
# This script should be placed in a directory with the following files:
#
# File name          Type      Description
#
# boot_patch.sh      script    A script to patch boot image for Magisk.
#                  (this file) The script will use files in its same
#                              directory to complete the patching process.
# util_functions.sh  script    A script which hosts all functions required
#                              for this script to work properly.
# magiskboot         binary    A tool to manipulate boot images.
# chromeos           folder    This folder includes the utility and keys to sign
#                  (optional)  chromeos boot images. Only used for Pixel C.
#
#######################################################################################

############
# Functions
############

#################
# Initialization
#################

BOOTIMAGE="$1"
[ -e "$BOOTIMAGE" ] || abort "$BOOTIMAGE does not exist!"

# Dump image for MTD/NAND character device boot partitions
if [ -c "$BOOTIMAGE" ]; then
  nanddump -f boot.img "$BOOTIMAGE"
  BOOTNAND="$BOOTIMAGE"
  BOOTIMAGE=boot.img
fi

chmod -R 755 .

#########
# Unpack
#########

CHROMEOS=false

ui_print "- Unpacking boot image"
./magiskboot unpack "$BOOTIMAGE"

###################
# Ramdisk Restores
###################

# Test patch status and do restore
ui_print "- Checking ramdisk status"
if [ -e ramdisk.cpio ]; then
  ./magiskboot cpio ramdisk.cpio test
  STATUS=$?
  SKIP_BACKUP=""
else
  # Stock A only legacy SAR, or some Android 13 GKIs
  STATUS=0
  SKIP_BACKUP="#"
fi
case $((STATUS & 3)) in
  0 )  # Stock boot
    ui_print "- Stock boot image detected"
    abort "! Please install Magisk first" 
    ;;
  1 )  # Magisk patched
    ui_print "- Magisk patched boot image detected"
    # ./magiskboot cpio ramdisk.cpio \
    # "extract .backup/.magisk config.orig" \
    # "restore"
    # cp -af ramdisk.cpio ramdisk.cpio.orig
    # rm -f stock_boot.img
    ;;
  2 )  # Unsupported
    ui_print "! Boot image patched by unsupported programs"
    abort "! Please restore back to stock boot image"
    ;;
esac

# Workaround custom legacy Sony /init -> /(s)bin/init_sony : /init.real setup
INIT=init
if [ $((STATUS & 4)) -ne 0 ]; then
  INIT=init.real
fi

##################
# Ramdisk Patches
##################

ui_print "- Patching ramdisk"

./magiskboot cpio ramdisk.cpio \
"mkdir 0750 overlay.d" \
"mkdir 0750 overlay.d/sbin" \
"add 0750 overlay.d/init.autoboot.rc files/init.autoboot.rc" \
"add 0750 overlay.d/sbin/autoboot.sh files/autoboot.sh" \
"patch" \
"#$SKIP_BACKUP backup ramdisk.cpio.orig" \
"#mkdir 000 .backup" \
"#add 000 .backup/.magisk config" \
|| abort "! Unable to patch ramdisk"

rm -f ramdisk.cpio.orig config magisk*.xz stub.xz

#################
# Binary Patches
#################

# Remove Samsung defex
  # Before: [mov w2, #-221]   (-__NR_execve)
  # After:  [mov w2, #-32768]
  ./magiskboot hexpatch kernel 821B8012 E2FF8F12 && PATCHEDKERNEL=true

# If the kernel doesn't need to be patched at all,
  # keep raw kernel to avoid bootloops on some weird devices
  $PATCHEDKERNEL || rm -f kernel
fi

#################
# Repack & Flash
#################

ui_print "- Repacking boot image"
./magiskboot repack "$BOOTIMAGE" || abort "! Unable to repack boot image"

# Sign chromeos boot
$CHROMEOS && sign_chromeos

# Restore the original boot partition path
[ -e "$BOOTNAND" ] && BOOTIMAGE="$BOOTNAND"

# Reset any error code
true